133286748 has 96 divisors (see below), whose sum is σ = 390512640. Its totient is φ = 34499520.

The previous prime is 133286731. The next prime is 133286759. The reversal of 133286748 is 847682331.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34893 + ... + 38523.

It is an arithmetic number, because the mean of its divisors is an integer number (4067840).

Almost surely, 2^133286748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133286748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195256320).

133286748 is an abundant number, since it is smaller than the sum of its proper divisors (257225892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133286748 is a wasteful number, since it uses less digits than its factorization.

133286748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687 (or 3685 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 133286748 is about 11544.9880034585. The cubic root of 133286748 is about 510.8134500311.

The spelling of 133286748 in words is "one hundred thirty-three million, two hundred eighty-six thousand, seven hundred forty-eight".